Are attributes supported when I convert listings to MarketplaceAdvisor?
If you have launched an item to eBay directly and used Item Specifics for that item, when you convert the listing to MarketplaceAdvisor the Item Specific information will not appear in the fields within the attributes tab for that item. You will need to go to the Inventory Item Maintenance page and click the Attributes tab at the top of the form. Complete at least the required fields and click Save. Save the Inventory Item Maintenance page as well.